{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4f0eefaaee638a69c13e5506f2439c8fb95c4d7f0e382c18ab0b39e7bb8ff98b",
    "signature": "0x93dcad785c446414e44a3d4f2782846226b55d86dcd333fb5681d19cef15506a65d313d3427bf22e34823fa3a98dfc482ea4e5f1821273b5a168a56a33efda6a1c",
    "signer": "0x4ec0618BF74aDf72181673DDa518f0bf7781DE7E",
    "userId": "703354792"
  }
}