{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21640",
    "entityType": "User",
    "nonce": "0xe3518e9dddf9b8de6cb8aca7525613efe7c55c39db892a2e6d6ca4aafadb9540",
    "signature": "0xd3143dd09c88374a48a46320358dea1933bc0b503ee19a03d821fa8179a07a704ab10974a3554a94c8f991f2de6def5c367f645af7ea97a4b855cc56a9f1652c1b",
    "signer": "0x3Ec9E017e31a38A18602E735a761076100861F7b",
    "userId": "910895194"
  }
}