{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299279",
    "entityType": "User",
    "nonce": "0x78e68ea5fb1a18dbcd75f2adfd5b570acd82283ef92ea4afa864609f0ce4612a",
    "signature": "0x3a481244792bbeb6a1982fc71acefe8b65d5e15a8945dfcdbab94b797e48a11d0162790db265be5f675d784de3a5068e496684eec037144cb50570a78484c8961b",
    "signer": "0x670E4517CCB95F2b528b0D6B0E50DC7a0f51f838",
    "userId": "555604608"
  }
}