{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd0bc42d9c625567b7f9c4d34990c9ec4282635156cc0e2cbef37364ccee69862",
    "signature": "0xd9066e5950bf5737d46d3e7a93912b11a0112264769afa0fdb2512e73572417646e11011c7526d40ac63efd2deba011cd4c671390589fd8fd839ef654bc792441c",
    "signer": "0xFf2437389375Ba241D046fEb32cdfb9e1B3f4Cc3",
    "userId": "920962897"
  }
}