{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfd0686d83570c63942a775bbb6d8d8f6a334a52acbf31692ae5f1e8b7aea221c",
    "signature": "0x8903f5017961ccdb8fd9ed132e298e86cb0076c559876bdc27355527827ce93702971d0145e421df73e0477bb124a3c08aa1bc6a0285e1ca7965e23eb65c15e81c",
    "signer": "0x4158b77D32acc85C94eb0C3e9cc09ab346D7626F",
    "userId": "892797060"
  }
}