{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa4b4ce3e99a84b805748ba57adf33059235e1aaba951d416785e68dcd1f8bc2f",
    "signature": "0x18d33c19191b460a481960da50f928594f0fb729dded976c9e0d1ee45884f31d3d963f95fa2463ae4ba771afcd537f53d4219e07bccf97f3f4598a46e11140261b",
    "signer": "0xa6E4E246D41b7E29e25AE1Ad31AF578485825e56",
    "userId": "251614098"
  }
}