{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355997",
    "entityType": "User",
    "nonce": "0x3f2fc07dc602a309e6668def2f706b7d88f3328d89946bbf6775dacbcb86984c",
    "signature": "0x5c1c14b5cf40fab6cb0bf1f247b9f90951f22a89733f533649b430a6926ff5d8604a5d0319bf340cf3a5680ad6bcf06ef47de1cc04c3b158ecbf37ecb4d9000d1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}