{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9361cd77f51278300b962dcd9c841c19a9ef1dcbde1196dfa3c9b577424181c5",
    "signature": "0xbaac7e0043abcf86c5ed6b05ef6dd9f5acfcea6bf1d27fa61b3dca220c4c71217975e8ebf0a495f8c2e537d76f33e2a100bfd3eb50d60d9a4884e3e1fabdb84c1b",
    "signer": "0xC982f8B52eee7F9710Edeb184eA0a7401A3C79fC",
    "userId": "401235853"
  }
}