{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75700",
    "entityType": "User",
    "nonce": "0x440d69859294d87fe0abb1316de1ef6883840ed1bb27845a3094c512781e34f1",
    "signature": "0x8943cba1b66c8ced584d1f668ee7d6e5c080de4f869f2c5e25e0767bc55b846c1e5f6ede4a68d5a15913496046a7d8a8af548b1d5a06da48e188a27ee8e960311b",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}