{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "211200",
    "entityType": "User",
    "nonce": "0x973149d6bc7ecbe75a49b1b6476c2ca060f06b33a442434bbb8d0110520093f8",
    "signature": "0x1f36c37eb3e30d81344b217e8661612f4e96a9b60178017561959edb1e3af3d154817a4bab1c4534d32d89c8c830c2b97a165be66cb3cd0e9748b76d6cad6c2b1c",
    "signer": "0x0246262E4959323EAC2FBf603C6D24352d57Fc51",
    "userId": "700531000"
  }
}