{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12880",
    "entityType": "User",
    "nonce": "0xe468f95268f53ccff3d46e2be8616b2b7110f5fe45af0fb549a271e5d6ecc888",
    "signature": "0xac5094a520d6ab49574a6d6d8849d55c8c01de48180faee89cd2b680bfbc3e6971abc06df1f87d858fe5cf49a7bf3d582ada6611c33cc763c746638d2b21aa321c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}