{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50198",
    "entityType": "User",
    "nonce": "0x90b786c13b255b3a32b1ee9e64b6a91a278d577ed495af2bb833a7d7e8a59bf5",
    "signature": "0xf51a3534cdc1fb50e2ac20aeebc9c6de464d27efdcb9b7a0257ff7fa2e66ec7562b28f449feaf64668e2ed7cf45f91424cfbb48443a5cecd70fdb4b65db250161c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}