{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x2da85303df1ed60771a8442361905192c6be13e0c0683f7fe805e2578b2ddb41",
    "signature": "0x49324983f634c997b1b655cb507fc89d35267472568f6fd134102b3fc74fb93745fd7972518999ad13d7b73bd180b981c9177fe9b9697d750ff5d50aec22564e1c",
    "signer": "0x5C1d482837e51E888AAe0eEC93Fd2a84101faA81",
    "userId": "73594244"
  }
}