{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991877005",
    "entityType": "User",
    "nonce": "0x910172829d66411ea2214cd5af421d3129c01ecc786da6110c743488815c33fb",
    "signature": "0x9dabbba1d6b812620b4777ae768febdce3a097f2e123fb035291df05c6e4bd7f3cb47544890af600b783f5fe5f0d09108ffd3585c8ff1cca4830cad41b49e04e1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}