{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1509311",
    "entityType": "User",
    "nonce": "0x7f8bf76410947df46e42c92ea93822e9d878d18f7acd39764eedd3cdcec73ecb",
    "signature": "0xdbf06a79822734e43fa5b53ee042fa355da05c9411c6496f9e3dd86942d53c8b7aafa721f34cd44a692e0920bb00ae700180369ccfbf424ed85ad5690e1d62f61c",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}