{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "157194",
    "entityType": "User",
    "nonce": "0x13a2ea8e668b2fa88349ea6c33a2f90a0d7d8e69db2ed57f1a86ee1e2e297a7c",
    "signature": "0xacab5d1abb91a77a941bdbb0d73cd0a28f83ff332252ca677c705f19e9fbd788059bda34fe6b793bf28d9c82b0a92349ba15713b545202c89ddab6ebd789d4b01b",
    "signer": "0xe7cf0875B98A0048424DbADB6510a76E9eBE6C9f",
    "userId": "21915114"
  }
}