{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5aa0e1cd2d9bf71447a6118986ceb94c08cd556e82ff7dc2b1fa0d441ad1f931",
    "signature": "0xa77907a0b04990b28a86f7d2118d3faf7744a7ed5aa91ee33942c7319d69eabf76a58e6d869f716113d697a4b8f2ac763be3899493e28fa1578ebaeabe7bdf561b",
    "signer": "0xe88721130a8800cc60586b20Ffcfda735c9Af2d3",
    "userId": "14676539"
  }
}