{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3cbe2d840fc105b92682e6159561a11fca0b1aec77bc54ff27a3ebb095416e01",
    "signature": "0xe7bb853079c25732cb32c2b7c78a9361ea14cf9c83dad49bde4ea0f1f25ee57c266f61bc4bc6de0ce1eca27b01a20188815d3cdaca2c6a03eb7df404460db1701c",
    "signer": "0x7B12EF8dDA5E7f50B80af62Ed1fE585F9A88CB28",
    "userId": "589258310"
  }
}