{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42105",
    "entityType": "User",
    "nonce": "0x2ddd10dcfc7bb4ae2d9c1a274cae09f3860ff7ebfd6ac8baf991b0b423b0d758",
    "signature": "0xe62d816a29b9291acd6f4195d78d7e12c81ae1f08495b5b5164336330f0f046d2d999827edf4267cc27035a699d0d6d3dd713cd2e4827443f6d770224467d2811c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}