{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64890",
    "entityType": "User",
    "nonce": "0xf7a41316a22286e31473508ada2a5b4de6237b222d3738f23381559917d15d79",
    "signature": "0xaca129243fba81791d707d5e8b133002afa295e5bd90a15d84dd514ded58181f606ead08ea066776bc09932f663e120a84f579b6da4e27b903aa9901957676661b",
    "signer": "0x8fb06be829c5718Bb968af1525d910B795617ac0",
    "userId": "950478625"
  }
}