{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x91eaf8783fc02b736c1e2462bf6cafa320d443244ec938fc9e796da77060b61d",
    "signature": "0x3f0e8a274b3c3be0a6a32a07a9d690e820aeeb2b61d8f99197605e0fe99b74e2297c2beb9e74d6fd9d3edc1db283884f5f0a0b19b330c80e0c61396eecf4f2361c",
    "signer": "0x62c5f26C360539EAB59c1a6AAAcD930200D11Ef9",
    "userId": "643542255"
  }
}