{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x5fc38fcdb53b07bf451fa14e86f19a936e1fb65db66cecd1a3faa6fdee9698d6",
    "signature": "0x64d1f9063351eff32d46a4e5e19efa3437fc6330f4c47196167d5f096baa8cd13c875045ae1238c2820305cf552e734a3e5e7f1ebcb62b684a0da83ad4f5024e1b",
    "signer": "0x5dbC53C543BdfE71AEb38f1Edef3E53cbd920f07",
    "userId": "832445087"
  }
}