{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x25aaa586694f50331a4c7c636a0ba5906d53956d4134ba298de6c3d77cfead29",
    "signature": "0x7cbe212f7919f0450474a728ccd823ce3be7e22d1ae5a6057a3f7125ac7ba6e775456afcc0f39dd24c1072862cfa3aef7ccea3c549bbab046dd51ffd0ad6e2a91b",
    "signer": "0xeE668EE089Ee648DE5Ffa964C4832e855f35F0C4",
    "userId": "551130365"
  }
}