{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaaaa09599f8f4a89614f83ea8e4a9de18150ddbc7cf4ed52e164e23474ecd8bd",
    "signature": "0xb5227bcba7ba48ec2b2d65e4139f20e48f8db65d1b1e940d700df343663a6f553cb7eb8662199edb7465efcb5c5fc5874a07159575d682b529f01cae9f4e05a01b",
    "signer": "0xbF01d3816a6F4764Da6dF0CeFC8C48EEFdABB333",
    "userId": "419795889"
  }
}