{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "937107046",
    "entityType": "User",
    "nonce": "0xa8477f3c90ef955c1014b4e45e05f8d22a852ecee0c5626f1883b6cb5980d835",
    "signature": "0xada77e4e1b074b139e3d12d32e17861ce199943fce68ba4474454c903f3ff2c729fe95bda40e43a374f36c7a6b6ee51419ef51da1c838a70e333ad4d3fbd41fb1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}