{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "638733607",
    "entityType": "User",
    "nonce": "0xfa29f5a2a485d49400ead46245ffa8a6f1a631c9f603995076473318d5ffefb6",
    "signature": "0x471de71cda6e50324c1f0943ba950a339628792e83c787a2d3cc7669330338f46fd27d476bc09fb8bc0c622f98c29478788ac2049211b624980d8bdde21670d91c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}