{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18103630",
    "entityType": "User",
    "nonce": "0x8549228f56d62ae73d7cdc37b28cbddca26eb23de11d36d4f060553c26245119",
    "signature": "0x914a8c00fa328675b0b0a85c73ecf6b04d5a540f00cde0d6daea1e26ac2130a906f8b8c6a1a3d81b45bbbb478dc2904be55b9d72264bb4275141ce0f0d09eef61c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}