{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "842214964",
    "entityType": "User",
    "nonce": "0x3b280b45e6c441fcbe08e261e2d3823aa7dd7ffcebd39e582fa59feaaedac1a9",
    "signature": "0x4f4687e03ea2af56cfd6a44ede190576f7b00acf240c576422b88cbaf5b8dcb702e816d7bc4dcbdcbf06c363b52b2c4254c010203032c10513b8ff10d657bbc51c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}