{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x71e194e9cb72e990926988674ef35903c6f8fa42d55a4290266cbbacd2b444b3",
    "signature": "0x464d66e7280fcfc46d879ee5365bc2da6d025673c6946d11f1233f513a7b829829492fc5156202f4d9c024149a92c1feafd1152022b13452f87641eb90a5d71a1c",
    "signer": "0xcDd4bA67dFa5A12799fdF828BAe6484f14Fb02Fc",
    "userId": "502753271"
  }
}