{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57469",
    "entityType": "User",
    "nonce": "0xccd839d564e2d31962dc511a1b68a96ec2056992eb60143b49b3b1dfff39bc05",
    "signature": "0xa56d9c082e60b356d7f02d4d3ccfadf7ad9e71a8c0a0ca99abb0fe787547bebd14adc07a55db67cea06f8c7ab1ef9e77cb04a241de0f47b1e885934538d0f8421c",
    "signer": "0x3B15C1247a5CC34F846b88f0E04B262f39b05C1e",
    "userId": "563285188"
  }
}