{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4fe438033f5ab03515f125773810e8fc0148ee866a64966a84afbabc154533d7",
    "signature": "0x25c2846fcbee1c1dbfc67415f92e1739203a42e71810cc3e68c0844264f489b429a8210e8c3dc809feba1342747f01059db15304be8ed6b5ea7cc1018abe3bc21b",
    "signer": "0xBF5a33C091c6A8356D52a214899a761152Ae4570",
    "userId": "464521883"
  }
}