{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "148293",
    "entityType": "User",
    "nonce": "0x7eead458849c0b946f0a3bd2d8b15887380562ea003cf75359e5a6759f401476",
    "signature": "0x18b3b1b72f428b7b818016477bec33aca618a6e6ec6f76f10c6e11becff728e46709d50c9c98481839f4250557ae4c3d40768daf6e9caee4d421db77e5246c651c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}