{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "872142418",
    "entityType": "User",
    "nonce": "0xd8c67e04b183421f70908ecd0ff04b5bbbb0e88545bfd0ae2b04b62e4e4ce39f",
    "signature": "0xad4d429c575fa8a63a6b3082dd2cd0bca31e66237be54784e728cad6dd9190f03962000b0ef9610add1695c4e17791d4e3e0936709d2a6afb4b7b5664404fc311b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}