{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299265",
    "entityType": "User",
    "nonce": "0x3ee44c5e8009f8fc2e1cd66d1eb49919b7d72a5288446d79413cf63eb64443f9",
    "signature": "0xc8436dfdd281f4bc2b9e89c07b5557401fb4103cbe50695b4b87d62ff72dc2d32c2cf3808e1888dfae2fc1b6ba1920f200bdeeeaad86c61c001fef68c02ba0bc1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}